Question

Carole owns a two story house with a heating and cooling unit on each floor. In the winter she mostly uses the downstairs unit because the volume of warm air __________ and __________ warming the whole house through __________. A) expands, rises, convection B) expands, sinks, conduction C) contracts, rises, conversion D) contracts, sinks, contraption Submit Hint

Answer 1

A. Expands, Rises, Convection

Answer 2

(A) expands, rises, convection

Carole owns a two story house with a heating and cooling unit on each floor. In the winter she mostly uses the downstairs unit because the volume of the warm air expands and rises warming the whole house through convection.

As the convection is a process in which heat passes from one place to another.